Debian: DSA-4347-1: perl security update

Multiple vulnerabilities were discovered in the implementation of the Perl programming language. The Common Vulnerabilities and Exposures project identifies the following problems:

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Debian Security Advisory DSA-4347-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                     Salvatore Bonaccorso
November 29, 2018                     https://www.debian.org/security/faq
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Package        : perl
CVE ID         : CVE-2018-18311 CVE-2018-18312 CVE-2018-18313 CVE-2018-18314

Multiple vulnerabilities were discovered in the implementation of the
Perl programming language. The Common Vulnerabilities and Exposures
project identifies the following problems:

CVE-2018-18311

    Jayakrishna Menon and Christophe Hauser discovered an integer
    overflow vulnerability in Perl_my_setenv leading to a heap-based
    buffer overflow with attacker-controlled input.

CVE-2018-18312

    Eiichi Tsukata discovered that a crafted regular expression could
    cause a heap-based buffer overflow write during compilation,
    potentially allowing arbitrary code execution.

CVE-2018-18313

    Eiichi Tsukata discovered that a crafted regular expression could
    cause a heap-based buffer overflow read during compilation which
    leads to information leak.

CVE-2018-18314

    Jakub Wilk discovered that a specially crafted regular expression
    could lead to a heap-based buffer overflow.

For the stable distribution (stretch), these problems have been fixed in
version 5.24.1-3+deb9u5.

We recommend that you upgrade your perl packages.

For the detailed security status of perl please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/perl

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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